# Frequency is measured in what units?

Frequency is a UNIT number...how many times do you bathe each week? Seven times....i.e. $\text{7 times per week}$...
In spectroscopy, we mean $\text{cycles per second....}$...and $\text{ONE cycle per second}$ $\equiv$ $1 \cdot H z \text{ (Hertz)} \equiv 1 \cdot {s}^{-} 1$....